Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bffa4e26479747b…

MALICIOUS

PDF

47.6 KB Created: 2021-09-26 17:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2070cbe4edb8db7a0900ace0b38c075c SHA-1: 3657d11c22c5fb6b7b03bb6cf4253fb7e03c8202 SHA-256: 5bffa4e26479747b340de76e3970e672e69a10a88ec5530a313d028b5c7fd8fd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs and its classification as a link farm suggest it's used for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7242

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://inwebjor.ru/uplcv?utm_term=enable+miracast+android+10 PDF link annotation
    • http://elektro-galerie-hamburg.de/userfiles/file/59540103089.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/jusugekodoze.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/84559910328.pdfIn PDF document text
    • http://administratieindex.nl/images/uploads/pimaxidupifaxe.pdfIn PDF document text
    • https://northwestconvention.cz/data/files/lunutexewusesijukezu.pdfIn PDF document text
    • http://hbaoge.com/upload/files/52285105733.pdfIn PDF document text
    • http://zlzljc.com/uploadfile/file///2021091206534851.pdfIn PDF document text
    • https://baigiangtoanhoc.com/upload/files/45289939484.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/63773151746.pdfIn PDF document text
    • http://mbeautyconcept.com/upload/content_images/file/zedanonuteguvobedopawi.pdfIn PDF document text
    • http://imi.vc/upload/files/17122171464.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/e2e5baea71818f61c41ff2006857a999/53917878010.pdfIn PDF document text
    • http://daindnc.com/fckeditor/userfiles/file/rarebutegenodiloz.pdfIn PDF document text
    • http://pantipplaza.com/userfiles/file/fubizutufebuzomizodogesu.pdfIn PDF document text
    • http://parquet-cortes.fr/data/Files/97834237567.pdfIn PDF document text
    • https://giasidaily.com/uploads/userfiles/file/97833841944.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/c9eab3e0a3ebe7b8a23fc0be2808efb1/87281442542.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/xikewifovojewaselutegerup.pdfIn PDF document text
    • https://812423.qqtogeljackpot2.com/contents/files/67890180066.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/bodavevewur.pdfIn PDF document text
    • http://moscowprice.com/content/xuploadimages/file/4905512255.pdfIn PDF document text

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